Steven delivered full localization support for MCP plugin resources in the payloadcms/payload repository, enabling multilingual content management for international projects. He implemented locale and fallbackLocale handling across all resource operations, ensuring seamless integration with underlying Payload REST API calls. Using TypeScript and applying skills in API and full stack development, Steven wired localization logic through create, update, find, and delete workflows. He expanded integration test coverage by adding six new tests, bringing the total to fifteen, all passing. Documentation was updated to guide users on localization features and MCP client configuration, enhancing reliability and aligning with established localization patterns.